Elevator locking mechanism



(No Model.) 3 Sheets-Sheet 1.

J. s. MUGKLE. ELEVATOR LOOKING MECHANISM.

No. 595,961] Pate nted]?ec.Z1 ,1897

(No Model.)

3 Sheets-Sheet 2 J. S. MUOKLE. ELEVATOR LOCKING MECHANISM.

Patented Dec. 21,1897.

(NolModeL) 3"SheetsSheet 3.

J. s. MUGKLE. ELEVATOR LOOKING MECHANISM.

No. 595,961. Patented D8.0.Z1,1897

FIG? 6,

UNITED STATES- PATENT O FICE.

JOHN S. MUCKLE, OF PHILADELPHIA, PENNSYLVANIA.

ELEVATOR LOCKING MECHANISM.

SPECIFICATION formingpart of Letters Patent NO. 595,961, dated December 21, 1897.

Application filed August 5, 1897.

To all whom it may concern:

Be it known that I, JOHN S. MUCKLE, a citizen of the United States,.residing in Philadelphia, Pennsylvania, have invented certain Improvements in Elevator Locking Mechanisms, of which the followingis a specification.

The main object of my invention is to construct an elevator door and car look in such a manner that all the doors opening into the well, with the exception of the one opposite which the car is standing, are locked.

A further object of the invention is to avoid the clatter of the latches at the difierent landings when the car passes.

These objects I attain by providing an auxiliary latch, which is actuated by the car and which looks the bolt when released from the control of the main lock connected to the controlling mechanism and which is thrown into the path of the car by the main look when the controller is operated to stop the car, so that the car will actuate the auxiliary latch of the landing at which it is at rest so that the door can be opened, but all the other doors will be locked by the auxiliary latches.

In the accompanying drawings, Figure 1 is a view from the elevator-well, showing a landing-door and the mechanism for locking the door or the controlling mechanism. Fig. 2 is a section on the line 2 2,. Fig. 1. Fig. 3 is a perspective View showing the main locking device engaging the bolt. Fig. 4 is a view showing the main locking device raised and the auxiliary lock engaging a projection on the bolt and thrown in the path of a shoe on the elevator-car. Fig. 5 is a perspective view showing the shoe pressing the auxiliary lock out of engagement with the bolt, so that the bolt can be moved and the door to which it is attached opened. Fig. 6 is a View showing the landing-doorlockin g mechanism and controlling-rope.

A is the elevator-well, and a is one of the floors.

B is a sliding door in the present instance.

D is an elevator-car which is provided with a striker-shoe d, preferably of the form shown in Fig. 5, having a spring-plate d, which will yield when acting upon the auxiliary lock.

The lock proper is of the form illustrated and claimed in a patent granted to me on the 25th day of May, 1897, No. 583,332, and

Serial No. 647,221. (No model.)

consists of the plate E, which is secured at any convenient point in the elevator-well, in the present instance at a point below the landing-floor, and this plate has two bars 6 e, on which slides the locking-blockF, which has anelongated slot f, through which passes the bolt 19, secured to one lower corner of the door B. This sliding block F is coupled to the cords or rods F, which may be connected in any suitable manner to the head-wheel of the controlling-rope or to the rope itself, as fully illustrated in Fig. 6 and in the abovementioned patent.

The bolt- 12 has an L-shaped end I), which, when the locking-block is in the position shown in Fig. 3, is prevented from moving back by its L-shaped head bearing against the block; but when the blockis moved to the position shown in Fig. 4 to arrest the movement of the car then the L-shaped head is free to pass through the elongated opening f in the block; but this movement is prevented by the auxiliary latch G if the car is not at a landing, as the latch passes in front of a lug b on the bolt, preventing the withdrawal of the bolt and opening of the .door. This auxiliary latch G is pivoted at g to a stud e on the frame and has a long arm g and a short arm 9 This short arm has a striking edge 9 against which strikes the shoe cl on the car. This edge is rounded, so that the shoe will gradually actuate it, and the objectionable'noise caused by the shoe striking a lever or latch is prevented. The lower end of this latch is Weighted and is provided with a lug g having an inclined-face 9 against which a projection f on the sliding block F acts, so that when the block F is in the position shown in Fig. 3 this projection forces the lower arm g of the latch G out clear of the lug b and the upper arm 9 in a sufficient distance so that the shoe at will clear it, thus preventing the shoe striking the latch as the car passes the landings.

When the car is stopped at a landing, the block F is lowered, releasing the latch G from the control of the projection f, the lower arm of the latch will swing in front of the lug b on the bolt b, and the upper arm will be projected in the path of the striker-shoe d, so that when this striker-shoe comesopposite the projecting upper arm it will force the upper arm in and the lower arm out to such a distance that the lug b will be free, so that the bolt is then free from both the locking-block F and the auxiliary latch G and the door can be opened. As soon as the bolt is removed the elevator-car-locking arm H, which is pivoted ath, swings over the projection f on the block F and locks the controlling-rope against any movement to start the car until the door has been closed, which movement will cause the bolt to move the car-lockin g arm out of engagement with the projection on the block, afterwhich the block is free to be moved by the controlling-rope.

Thus it will be seen that by my invention I am enabled to look all the doors of the elevator-well by a single lock coupled to the controller and to also look the doors by individual or auxiliary latches which are normally clear of the striker on the car, but which are thrown into the path of the striker when the mechanism is operated to stop the car at the landing, so that when the car is brought to a stand opposite the door the auxiliary latch is automatically operated by the car, thus dispensing entirelywith the annoying clatter caused by the striking of a shoe against an auxiliary latch at each landing as the car passes either up or down the elevator-well.

I claim as my invention 1. The combination of an elevator-car, a door, a bolt thereon, a controller, a lock connected to the controller, a latch normally out of the path of the car said latch being moved into the path of the car when the controller unlocks the bolt from the main look so that the car may release the bolt and free the door, substantially as described.

2. The combination of an elevator-car, two or more doors, a bolt on each door, locking mechanism at each door, controlling mechanism connected to all the locking mechanisms, so that when the car is brought to a stand said locking mechanisms will release all the doors, an auxiliary latch at each door adapted to engage the door-bolt when the locks are actuated on the stopping of the car, and a shoe on the car which actuates the auxiliary latch of the landing-door at which it is at rest so as to release the bolt from said auxiliary latch to allow the door to be opened, substantially as described.

3. The combination of an elevator-car, two or more'elevator-doors, a bolt on each door, locking mechanism at each door, controlling mechanism connected to all the locking mechanisms, an auxiliary two-armed pivoted latch at each landing-door, one arm adapted to engage with the door-bolt, and a shoe on the car adapted to strike the other arm of that latch of the door opposite to which the car is standing so that the bolt can be withdrawn and the door opened, substantially as described.

4. The combination of the car D, the shoe cl thereon, the elevator-door B having a bolt 19 with an L- shaped end I), a locking-block F connected to the controlling mechanism of the car, a lug f on the said block F, a lug b on the bolt 1), a pivoted auxiliary latch G adapted to engage the lug b on the bolt and to be actuated by the projection f on the block when the said block is raised, said auxiliary latch having a projecting arm extending in the path of the shoe on the car when released from the control of the projection on the block, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN s. MUCKLE.

Witnesses:

CHAS. H. BANNARD, WILL. A. BARR. 

